In-Line XLR Volume Control for Low Impedance Microphones by BlowsMeAway Productions includes free USA shipping
Specifications:
Electrical:
Genuine "Neutrik" XLR connectors
For "balanced" cable and microphone wiring
Resistance: 0 - 10K ohm -- for low impedance microphones
Not for use with microphones that require phantom power
Physical:
Barrel: black-anodized aluminum
Length: 3 3/8 inches (due to connector overlap, adds 2 7/8 inches to system length.)
Diameter: 3/4"
Weight: 2 oz.
Great for Shure SM57 and SM58